Boiler cleaner



Nov. 14, 1933. N IL. sNow Er AL.

BOILER CLEANER Filed Dec. 16, 3.929 2 Shfensts--Shee?l l Quema:

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INVENTORS /Vor/Wam. S/fon/ Jaffa/e/ (ox ATTORNEY 3 BOILER CLEANER Filed Dec. 16, 1929 `2 Sheets-Sheet 2 w "Iv ml la Us l ,(7 BY ATTORNEYS MMM Patentecl Nov. Y174, 1933 ANormanl.. Snow,New Canaan, onm, and Samuel 'l F. CoLVDetx-oit, Mich., assignors to Diamond Power Specialty CorporatlomDe'troit, Mich., a olporonoflichigan f Appli am 16, 19z9f.` v serial Neustes Y comme. :gon-mgm@ f This invention relates to boiler cleaners vandhas particular reference to a boiler cleaner of the type in which a movable blower element is adapted to discharge' jets of cleaning uid .adjacent l portions of the'boiler to be cleaned.-

. One of the objects of this invention is Vto pro-V l vide a boiler cleaner o! the above mentioned character having means for imparting a multispeed movement to the blower element.

Y l0' A further object of Vthis invention is to pro- V vide a'boiler cleanerof the abovementioned character having a' blower element rotatable through-'blowingand non-blowing arcs and having-means for moving the blower element through 316 its blowing are at a different speed than the blower element is moved through its non-blow;- ing arc.

The invention further contemplates the provision ot a boiler cleaner of the VVabove mentioned j $0 character whichiwill remiire less time for voperation and which will decrease-to considerable extent the warping oi the blower element.

Other objects and advantages'of the inventiony as well as the numerousnnovel details od gumstruetion,A will'V become morer apparent 'aspthe following description proceeds; particularly when reference is hadA to the accompanying drawings wherein,v

1 is a vertical sectional view taken through a'boiler cleaner constructed in aecord-l ance'- withthe teachings oi' thisinventlon, and

Figure 2 is a view takenon the line 22o1lllguztelpV n Referring then particularly to' wherein like reference characters declgnate con: responding parts'throughout all views, the numetal l0 designates a boiler wall providedwith an' opening 11 through which a blower element 12 extends, this element being providedV with nozzles 13 for discharging cleaning fluid adjacent the portions of the boiler to be cleaned, such, for example, as the boiler tubes14. Arranged ex teriorlyofth'e boiler is a headdesignated generally by the reference characteril i'or supplying cleaning lluid to the blower element, this head carrying mechanism, hereinafter to Ibe described, for rotating the` blower element for directing the discharge nozzles toward different portions of the boiler. This head includes a goose-neck '16 adapted toreceive cleaning uid from-a suitable supply pipe 17, there being provided avatlve 18 for controlling the-now of c1eaning fluid' from the supply pipe to the `goose-neck. end :ity the. blower eiementfis .journalled as atlln the. other endo! thergoose-nedflto rei oeive.- cleaning uid. I romthe same, as will be clearlyapparent by reference to Figure. 1 of the drawings. x Y

For rotating the blower element, there is pro,. vided aY sheave wheelr25 adapted to be driven in a suitable manner .as by a chain V26 and this sheave wheel -is .ixedby a pin 27 to a shaftZS journalled. atits one end in a flange 29- formed onthe goosefneck and atitsv other end in a. bracket'30 which is xedgto-the goose-neck as di at 31..',f'As illustrated,V shaft 28. is provided on its one end with a nut and on its other end witha collar whereby this shattactsto tie the upper-end of bracketto vflange 29.V The hub 32 of the` slieavewheel is c oimterbored as at 33 79e to receive the-,end of a pinion 34 loosely mounted on tbegshaft8. Thatv end ofthe pinion which iaarrangedzwithin the counter-bore 33is provided with a'grooige- 35 .into which a pin. 36. carried: by the limbV 32de adapted to project for preventingmovementz-.of the pinionA longitudi- `theiaft 28;.and iixed to the other end ofythe pinion, as by a set screw 37,.is .a clutch member 38 having the clutch face 39. minted on the other end of the shaft i8y israepiniongl whiehis somewhat-larger than thepinienf ligand `piniozris hired-against longitudinal movement on the shaft 28 by means et sleegee 46 having a portionengaging a shoulder `4vfgrmedi onvthe shaft 28 and carrying Aa V85.L pin 48.engageable -inv agroove 49 in the said tothe blower element is a relatively large s earfs Vmounted for meshing Yengagement, with the 34.V YA- second gear 51, somewhat smaller than the gear 50, isalsoxed to the blower, element and this gear is adaptedfor meshing .gengagementwith the pinion 45. As illnstratedin Figure l of the drawings, the gears 50 Iand. 151. may have telescopic hub portions adaptedfto be iixed to the blower element by abinslepinor bolt 52 which passes through the telescopichub portions of the gears and enters a 53 formed-inthe blower element.

IFor coupling the pinions 34 and 45 to the shaft 28, there isprovided a clutch member 60 mounted for longitudinal movement on .the shaft 28but Iiredwagainst rotation relative to this shaitby means ot a key 61 engaging in a keyway., 62 viormedzin the shaft. This clutch member. is providedat its opposite ends with the clutch !aees.63 and 64 adapted to engage the clutch faces on the pinions 45am1134 respectively.

Eon-moving the .elutch`laxially of' the shaft me endommagement: with .mevr the. einer n of the pinions, there is provided an arm having yoke 66 mounted for rotation in a groove 67 formed in the outer periphery of the clutch member. The other end of the arm is connected to the end of a piston rod carriedby a piston 69 mounted in a cylinder 70 which is carried by the bracket 30. A spring 7l surrounds the piston rod and engages at its one end the piston 69 and at its other end the base of the cylinder to normally hold the piston in the position shown in Figure l of the drawings and the clutch member in engagement with the clutch face of the pinion 45.

1n accordance with the usual practice, the valve 18 is adapted to be periodically actuated upon rotation of the blower element by means of a cam xed relative to the blower element for rotation therewith. This cam engages a trigger 76 pivoted as at '17 to a lug formed on' the goose-neck and is connected as at '79 to the valve stem 80. Thus as the blower element is rotated, the valve 18 is opened for a portion of each rotation and closed for the remaining portion of each rotation.

Connecting into the goose-neck above the valve 18 is a tube 85 and the other end of this tube is connected as at 86 to the cylinder '70. 'Ihe arrangement is such that when valve 18 is opened, the cleaning fluid under pressure passes through pipe to cylinder 'l0 and moves the piston 69 longitudinally of this cylinder against the ten# sion of spring 71. y

From the above it is believed that the structure and operation of the invention will be clearly apparent. The blower element is adapted to be rotated through 360 and the valve 18 is automatically actuated to supply cleaning fluid to the blower element for a predetermined portion of each rotation. Thus cleaning fluid is discharged from the blower element only when the discharge nozzlesv are directed toward portions of the boiler to be cleaned, the blower element in each rotation passing through blowing and non-blowing arcs.

With the valve 18 closed, the piston' 69 will be in the position shown in Figure l of the drawings at which time shaft 28 will be coupled to pinion 45 by clutch member 60. The gears 45 and 51 constitute a high speed transmission whereby the blower element is rapidly rotated upon a rotation of the shaft 28. Thus if the sheave wheell is ro tated with the parts in the position shown in Figure l ofthe drawings, the blower element will be rapidly rotated until it reaches `the end of the non-blowing arc, at which time trigger 76 will be actuated by cam '75 to open valve 18. This will permit the passage of cleaning fluid to the blower element and also to the cylinder '10. Cleaning fluid enteringcylinder 70 behind piston 69 will force the piston to the left, as viewed in Figure 1. to effect a disengagement of clutch member 60 with pinion 4.5 and an engagement of the clutch member with pinion 34. Pinion 34 and gear 50 together constitute a slow speed transmission for rotating the blower element from the shaft 28 so that the blower element will be slowly rotated through its blowing arc. Obviously, when the blower element has reached the end of the blowing arc. valve 18 will be closed and clutch member 60 will be returned by spring '71 to the position shown in Figure 1 of the drawings to couple shaft 28 to the blower element through the high speed transmission.

Thus the invention provides for a two-speed rotation of the blower element whereby the blQWel cleaner for-cleaning parts oi a bol er.

element is rotated at a high speed through the non-blowing arc and is rotated at a low speed through the blowing arc. Sy decreasing the time required to move the blower element through its non-blowing arc, the total amountof time required to operate the blower element is decreased without hastening in any way the movement of the blower element through its blowing arc. Further, the invention provides means whereby the blower element has less ..ae to neat up during the non-blowing arc, thus decreasinY ole from warping by reason o the temperature change when thc relatively ccol steam which is generally used for cleaning iiuid rushes into thc hot blower tube at the beginning of each blowing,r

arc.

For the sake of convenience. the invention has been described as being embodied in a boiler it will be apparent, however, that the inventive principles disclosed maybe embodied in a device for cleaning similar types of apparat 1", and it is to be therefore understood that the word boiler wherever used throughout the specification and claims is to se construed as meaning a fluid heater or heat transfer lapparatus of any character, while the term boiler cleaner is to be construed as meaning a cleaner for any such apparatus.

While the invention has been described with considerable detail, it is vto be clearly understood that the description is for the purposes of illustration only and is not denitive of the limits of the inventive idea. The right is therefore re'- served to make 'such changes in the details' of construction and arrangement of parts as will fall within the purview of the attached claims.

W'hat we claim as our invention is:

1. The combination with a boiler, a rotatable blower element arranged to discharge cleaning fluid adjacent parts of the boiler to be cleaned and a drive member for rotating said element, of a high speed transmission for rotating said element from said drive member, a low speed transmission for rotating said eleinentfrom said drive member, and a clutch operating upon movement of said drive member to alternately couple said transmissions to said drive member. I

2. In combination, a rotatable blower element, a drive shaft for rotating said blower element, high and low speed transmissions for driving said blower element from said drive shaft, a clutch for coupling either of said transmissions to said drive shaft, and means controlled by the ow of cleaning fluid to the blower element for effecting an actuation of said clutch.-

3. In combination, a rotatable blower element, a drive-shaft for rotating said blower element, high and low speed transmissions for rotating said blower element from said drive shaft, a clutch for coupling either of said transmissions to said drive shaft. a valve for controlling the flow of cleaning iluid to said blower element, means for actuating said valve in timed relation to the rotation of the blower element, and means controlled by the now of cleaning fluid to the blower element for actuating said clutch.

4. The combination with a boiler and a rotatable blower element arranged to discharge clean ing fluid adjacent parts of the boiler to be cleaned, of high and low speed driving gears xed to said blower element, a drive shaft, a pair of pinions rotatably mounted on said drive shaft, each of said pinions being engageable with one of said gears, and a clutch for coupling either of said pinions to said drive shaft whereby the izo speed of rotation of said blower element may be controlled.v

5. In combination, a rotatable blower element, high and low speed driving gears ilxed to said blower element. a drive shaft for said element, pinions loosely mounted on said drive `shaft for engaging said gears, a clutch member for coupling either of said pinions to said drive shaft, means for controlling the supply of cleaning uid to the blower element and means controlled by the ow of cleaning iiuid to the blower ele-V ment for actuating said clutch.

6. In combination, a rotatable blower element, a goose-neck for supplying cleaning iluid to said blower element, a valve for controlling the flow A ot cleaning fluid through said goose-neck, means for actuating said valve in timed relation to the rotation of the blower element, a drive shaft, high and low speed transmissions for rotating said blower element from said drive shaft, a

clutch for coupling either of said transmissions into clutching engagement with either of saidv pinions, and means for actuating said clutch member in timed relation to the rotationvof said blower element.

8. In combination, a rotatable blower element, a valve and an operating means therefor so constructed and arranged that upon rotation of the blower element the valve is operated to control the flow of cleaning fluid to the blower element, a high vspeed driving means for said element, a low speed driving means for said element, and means operated by the pressure of the cleaning iluid supplied to said element upon operation of said valve by rotation of the blower element for controlling the actuation ofsaid driving means.

9. The combination with a rotatable blower element, a valve controlling the supply of cleaning uid to said blower element, and a drive member for said element, of high and low speed driving mechanisms for rotating said element from said member, means operable to couple either of said driving mechanisms to said member, and means including a member acted upon by the pressure of the cleaning fluid supplied to said element upon operation of said valve for controlling'the operation of said coupling means.

NORMAN L. SNOW. SAMUEL F. C'ZJX.'A 

